Tim Cook hasn't been horrible, but he hasn't been great.
He has an intense focus on making money and has thrown the idea of having insanely great products and happy customers out the window.
If somebody wants to make a company that Steve Jobs would have been proud of (I'm sure he'd be ashamed of the monstrosity Cook has made) then that'd be the angle to go at. But we're in a post-PC world, and the post-phone world is coming.
Focus on where the puck is going, not where it is. Jump straight at AR and beat Apple with something insanely great. Give it actual killer apps that everyone needs but doesn't know they need yet - beat back the soulless crap that Apple, Google, and Microsoft will make.